SSRF in Tencent Weknora
CVE-2026-91750
WeKnora before 0.7.0 fails to re-validate HTTP redirect targets in the POST /api/v1/knowledge-bases/:id/knowledge/url endpoint when downloading documents from user-supplied URLs. Authenticated attackers can bypass initial SSRF validation by supplying a public URL that redirects to internal network addresses, allowing access to internal services and cloud metadata.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (37.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 37.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/Tencent/WeKnora/issues/2511 (issue-tracking)
- github.com/Tencent/WeKnora (product)
- github.com/Tencent/WeKnora/commit/1d322c525a6197d24f07555b4b18ad33313b4328 (patch)
- github.com/Tencent/WeKnora/blob/v0.6.2/internal/application/service/knowledge_u… (technical-description)
- www.vulncheck.com/advisories/weknora-before-0.7.0-ssrf-via-unvalidated-http-red… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-91750?
- CVE-2026-91750 is a medium-severity vulnerability in Tencent Weknora, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.5/10. Published 2026-09-15.
- How severe is CVE-2026-91750?
- Medium severity. CVSS v3 base score is 6.5 out of 10.